A fast and accurate multigroup neutron diffusion calculation method was established for reactor core,and the semi-analytic nodal method(SANM) based on transverse-integrated diffusion equation was introduced within the framework of the analytic coarse mesh finite difference(ACMFD) formulation.
为快速、精确实现反应堆堆芯多群中子扩散计算,采用基于横向积分技术的半解析节块方法(SANM)求解中子扩散方程,并结合解析粗网有限差分(ACMFD)方法,导出了基于半解析节块方法的粗网有限差分方程(CMFD)耦合系数。
METHODS A kinetic equation for Chinese traditional medicine extraction process was presented based on Fick's second law of diffusion.
方法 基于Fick扩散第二定律 ,建立中药提取过程的动力学方程 ,并以实验对其进行检验。
Nernst-Einstein relation
（扩散定律）能斯脱爱因斯坦关系式
A Study of Regional Diffusion Law of Land Value Based on Fourier Law;
基于傅立叶定律的城市地价区域扩散规律研究
diffusion in non-steady state
非定常扩散,非稳态扩散
rule of diffusion with dilution
稀释作用的扩散规律
Fick's first law of diffusion. (Image courtesy of MIT OCW.
菲克扩散第一定律。（图片由麻省理工学院开放式课程小组提供。）
diaphragm diffusion cell technique
膜片式扩散筒测定法
optically oriented clay of diffuse form
扩散状光性定向粘粒
Grille diffuser on a duct end. Diffuser properties can be specified.
管道末端的格栅扩散器。可指定扩散器属性。
Study on the measurement of coal particale gas diffusion and diffusion coefficient
煤粒瓦斯扩散及扩散系数测定方法的研究
The Research of Centralization and Diffusion Laws To the Economic Central City;
经济中心城市的集聚与扩散规律研究
Diffusion of hydrogen in 304 stainless steel
氢在304不锈钢中扩散规律的研究
The dispersion law about the near outfall pollution in Han River(Ankang) area
汉江安康段排污口近区污染扩散规律
Studying of gas pervasion on open-space of iron and steel enterprises
钢铁企业开放空间煤气扩散规律研究
Gas diffusion in a Sierpinski gasket
基于Sierpinski地毯的气体扩散规律
Investigation on Elements Inter-diffusion in Reaction Layer During Hip Between Corrosion-resistant Alloy and Carbon Steel
耐蚀合金/碳钢热等静压扩散焊接反应层元素互扩散规律研究
Stability, Stabilization and Control of Stochastic Reaction Diffusion Systems;
随机反应扩散系统的稳定、镇定与控制
Pricing of Asian Options with Discrete Geometric Average in the Jump-Diffuse Process;
跳跃扩散型离散几何平均亚式期权的定价
Study on Dispersion and Deflagration of Flammable Gas;
开敞空间可燃气体扩散规律与爆燃现象的研究